WhaleFall

You draw on the primal magics of the world and call upon the power of the greatest creatures. You create up to 9 Conjuration arcane circles within the sky and each of these circles summon one Elder Whale. Each of these Whales fall 900 feet and have a radius of 50 feet, each creature within the 50 ft of the Whales landing point must make a Dex Saving throw and on a failed saving throw each creature takes 10d12 force damage. In addition, damage dealt by this spell ignores resistance, you can also expend a spell slot to reroll any ones you roll on the initial Damage roll. The level of spell slot expended must be equal to or higher than the number of dice being rerolled.